| author | Craig Dowell <craigdo@ee.washington.edu> |
| Fri, 09 Oct 2009 21:18:24 -0700 | |
| changeset 5407 | 4ad0d23af431 |
| parent 5224 | 06f639d05b8f |
| child 5497 | d8b1b591839b |
| permissions | -rw-r--r-- |
| 3505 | 1 |
<!doctype html public "-//w3c//dtd html 4.0 transitional//en"> |
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<html> |
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<head> |
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> |
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<title>ns-3 Change Log</title> |
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</head> |
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<body> |
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<h1> |
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ns-3: API and model change history</h1> |
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<!-- |
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This ChangeLog is updated in the reverse order |
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with the most recent changes coming first. Date format: DD-MM-YYYY |
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--> |
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<p> |
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ns-3 is an evolving system and there will be API or behavioral changes |
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from time to time. Users who try to use scripts or models across |
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versions of ns-3 may encounter problems at compile time, run time, or |
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may see the simulation output change. </p> |
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<p> |
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We have adopted the development policy that we are going to try to ease |
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the impact of these changes on users by documenting these changes in a |
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single place (this file), and not by providing a temporary or permanent |
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backward-compatibility software layer. </p> |
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<p> |
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The goal is that users who encounter a problem when trying to use older |
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code with newer code should be able to consult this file to find |
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guidance as to how to fix the problem. For instance, if a method name |
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or signature has changed, it should be stated what the new replacement |
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name is. </p> |
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<p> |
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Note that users who upgrade the simulator across versions, or who work |
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directly out of the development tree, may find that simulation output |
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changes even when the compilation doesn't break, such as when a |
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simulator default value is changed. Therefore, it is good practice for |
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_anyone_ using code across multiple ns-3 releases to consult this file, |
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as well as the RELEASE_NOTES, to understand what has changed over time. |
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</p> |
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<p> |
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This file is a best-effort approach to solving this issue; we will do |
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our best but can guarantee that there will be things that fall through |
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the cracks, unfortunately. If you, as a user, can suggest improvements |
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to this file based on your experience, please contribute a patch or drop |
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us a note on ns-developers mailing list. </p> |
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<hr> |
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<h1>Changes from ns-3.5 to ns-3.6</h1> |
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<h2>Changes to build system:</h2> |
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<ul> |
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<li><b>A new test framework is provided with ns-3.6 that primarilay runs outside waf</b> |
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<p>"./waf check" now runs the new unit tests of the core part of ns-3.6. |
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In order to run the complete test package, use "./test.py" which is |
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documented in a new manual -- find it in ./doc/testing. "./waf check" |
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no longer generates the introspected Doxygen. Now use "./waf doxygen" |
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to do this and generate the Doxygen documentation in one step. |
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</p> |
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</ul> |
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<h2>New API:</h2> |
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<ul> |
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<li><b>Longest prefix match, support for metrics, for Ipv4StaticRouting and Ipv6StaticRouting</b> |
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<p>When performing route lookup, first match for longest prefix, and then |
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based on metrics (default metric = 0). If metrics are equal, most recent |
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addition is picked. Extends API for support of metrics but preserves |
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backward compatibility. One small change is that the default route |
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is no longer stored as index 0 route in the host route table so |
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GetDefaultRoute () must be used. |
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</p> |
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</li> |
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<li><b>Route injection for global routing</b> |
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<p>Add ability to inject and withdraw routes to Ipv4GlobalRouting. This |
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allows a user to insert a route and have it redistributed like an OSPF |
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external LSA to the rest of the topology. |
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</p> |
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</li> |
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<li><b>Athstats</b> |
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<p>New classes AthstatsWifiTraceSink and AthstatsHelper. |
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</p> |
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</li> |
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<li><b>WifiRemoteStationManager </b> |
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<p>New trace sources exported by WifiRemoteStationManager: MacTxRtsFailed, MacTxDataFailed, MacTxFinalRtsFailed and MacTxFinalDataFailed. |
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</p> |
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</li> |
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<li><b> IPv6 additions</b> |
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<p> Add an IPv6 protocol and ICMPv6 capability. |
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<ul> |
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<li> new classes Ipv6, Ipv6Interface, Ipv6L3Protocol, Ipv6L4Protocol |
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<li> Ipv6RawSocket (no UDP or TCP capability yet) |
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<li> a set of classes to implement Icmpv6, including neighbor discovery, |
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router solicitation, DAD |
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<li> new applications Ping6 and Radvd |
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<li> routing objects Ipv6Route and Ipv6MulticastRoute |
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<li> routing protocols Ipv6ListRouting and Ipv6StaticRouting |
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<li> examples: icmpv6-redirect.cc, ping6.cc, radvd.cc, radvd-two-prefix.cc, simple-routing-ping6.cc |
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</ul> |
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</p> |
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</li> |
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<li><b>Wireless Mesh Networking models</b> |
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<ul> |
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<p> |
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<li> General multi-interface mesh stack infrastructure (devices/mesh module). |
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<li> IEEE 802.11s (Draft 3.0) model including Peering Management Protocol and HWMP. |
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<li> Forwarding Layer for Meshing (FLAME) protocol. |
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</ul> |
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</p> |
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</li> |
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<li><b>802.11 enhancements</b> |
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<p> |
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<ul> |
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<li> 10MHz and 5MHz channel width supported by 802.11a model (Ramon Bauza and Kirill Andreev). |
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</ul> |
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<ul> |
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<li> Channel switching support. YansWifiPhy can now switch among different channels (Ramon Bauza and Pavel Boyko). |
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</ul> |
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</p> |
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</li> |
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<li><b> Nix-vector Routing</b> |
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<p> Add nix-vector routing protocol |
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<ul> |
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<li> new helper class Ipv4NixVectorHelper |
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</ul> |
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<ul> |
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<li> examples: nix-simple.cc, nms-p2p-nix.cc |
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</ul> |
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</p> |
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</li> |
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<li><b>New Test Framework</b> |
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<p> Add TestCase, TestSuite classes |
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<ul> |
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<li> examples: src/core/names-test-suite.cc, src/core/random-number-test-suite.cc, src/test/ns3tcp/ns3tcp-cwnd-test-suite.cc |
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</ul> |
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</p> |
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</li> |
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</ul> |
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<h2>Changes to existing API:</h2> |
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<ul> |
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<li><b>InterferenceHelper</b> |
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<p>The method InterferenceHelper::CalculateTxDuration (uint32_t size, WifiMode payloadMode, WifiPreamble preamble) has been made static, so that the frame duration depends only on the characteristics of the frame (i.e., the function parameters) and not on the particular standard which is used by the receiving PHY. This makes it now possible to correctly calculate the duration of incoming frames in scenarios in which devices using different PHY configurations coexist in the same channel (e.g., a BSS using short preamble and another BSS using long preamble). </p> |
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<p> The following member methods have been added to InterferenceHelper:</p> |
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<pre> |
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static WifiMode GetPlcpHeaderMode (WifiMode, WifiPreamble); |
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static uint32_t GetPlcpHeaderDurationMicroSeconds (WifiMode, WifiPreamble); |
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static uint32_t GetPlcpPreambleDurationMicroSeconds (WifiMode, WifiPreamble); |
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static uint32_t GetPayloadDurationMicroSeconds (size, WifiMode); </pre> |
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<p> The following member methods have been removed from InterferenceHelper:</p> |
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<pre> |
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void Configure80211aParameters (void); |
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void Configure80211bParameters (void); |
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void Configure80211_10MhzParameters (void); |
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void Configure80211_5MhzParameters (void);</pre> |
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</li> |
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<li><b>WifiMode</b> |
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<p>WifiMode now has a WifiPhyStandard attribute which identifies the standard the WifiMode belongs to. To properly set this attribute when creating a new WifiMode, it is now required to explicitly pass a WifiPhyStandard parameter to all WifiModeFactory::CreateXXXX() methods. The WifiPhyStandard value of an existing WifiMode can be retrieved using the new method WifiMode::GetStandard().</p> |
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</li> |
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<li><b>NetDevice</b> |
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<p>In order to have multiple link change callback in NetDevice (i.e. to flush ARP and IPv6 neighbor discovery caches), the following member method has been renamed:</p> |
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<pre> |
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- virtual void SetLinkChangeCallback (Callback<void> callback); |
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+ virtual void AddLinkChangeCallback (Callback<void> callback);</pre> |
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Now each NetDevice subclasses have a TracedCallback<> object (list of callbacks) instead of Callback<void> ones. |
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</li> |
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</ul> |
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<hr> |
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<h1>Changes from ns-3.4 to ns-3.5</h1> |
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<h2>Changes to build system:</h2> |
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<ul> |
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</ul> |
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<h2>New API:</h2> |
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<ul> |
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<li><b>YansWifiPhyHelper supporting radiotap and prism PCAP output</b> |
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<p>The newly supported pcap formats can be adopted by calling the following new method of YansWifiPhyHelper:</p> |
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<pre> |
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+ void SetPcapFormat (enum PcapFormat format); |
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</pre> |
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where format is one of PCAP_FORMAT_80211_RADIOTAP, PCAP_FORMAT_80211_PRISM or PCAP_FORMAT_80211. By default, PCAP_FORMAT_80211 is used, so the default PCAP format is the same as before.</p> |
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</li> |
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|
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<li> <b>attributes for class Ipv4</b> |
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<p> class Ipv4 now contains attributes in ipv4.cc; the first one |
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is called "IpForward" that will enable/disable Ipv4 forwarding. |
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</li> |
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<li> <b>packet tags</b> |
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<p>class Packet now contains AddPacketTag, RemovePacketTag and PeekPacketTag |
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which can be used to attach a tag to a packet, as opposed to the old |
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AddTag method which attached a tag to a set of bytes. The main |
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semantic difference is in how these tags behave in the presence of |
|
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fragmentation and reassembly. |
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</li> |
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</ul> |
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<h2>Changes to existing API:</h2> |
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<ul> |
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208 |
|
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<li><b>Ipv4Interface::GetMtu () deleted</b> |
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<p>The Ipv4Interface API is private to internet-stack module; this method |
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was just a pass-through to GetDevice ()->GetMtu (). |
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</p> |
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</li> |
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<li><b>GlobalRouteManager::PopulateRoutingTables () and RecomputeRoutingTables () are deprecated </b> |
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<p>This API has been moved to the helper API and the above functions will |
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be removed in ns-3.6. The new API is: |
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<pre> |
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Ipv4GlobalRoutingHelper::PopulateRoutingTables (); |
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Ipv4GlobalRoutingHelper::RecomputeRoutingTables (); |
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</pre> |
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Additionally, these low-level functions in GlobalRouteManager are now public, |
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allowing more API flexibility at the low level ns-3 API: |
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<pre> |
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GlobalRouteManager::DeleteGlobalRoutes (); |
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GlobalRouteManager::BuildGlobalRoutingDatabase (); |
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GlobalRouteManager::InitializeRoutes (); |
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</pre> |
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</p> |
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</li> |
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<li><b>CalcChecksum attribute changes</b> |
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<p>Four IPv4 CalcChecksum attributes (which enable the computation of |
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checksums that are disabled by default) have been collapsed into one global |
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value in class Node. These four calls: |
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<pre> |
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Config::SetDefault ("ns3::Ipv4L3Protocol::CalcChecksum", BooleanValue (true));
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Config::SetDefault ("ns3::Icmpv4L4Protocol::CalcChecksum", BooleanValue (true));
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Config::SetDefault ("ns3::TcpL4Protocol::CalcChecksum", BooleanValue (true));
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Config::SetDefault ("ns3::UdpL4Protocol::CalcChecksum", BooleanValue (true));
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</pre> |
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are replaced by one call to: |
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<pre> |
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GlobalValue::Bind ("ChecksumEnabled", BooleanValue (true));
|
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</pre> |
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</p> |
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</li> |
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248 |
|
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<li><b>CreateObject changes</b> |
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<p>CreateObject is now able to construct objects with a non-default constructor. |
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If you used to pass attribute lists to CreateObject, you must now use CreateObjectWithAttributes. |
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</p> |
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</li> |
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254 |
|
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<li> <b>packet byte tags renaming</b> |
256 |
<ul> |
|
257 |
<li>Packet::AddTag to Packet::AddByteTag</li> |
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<li>Packet::FindFirstMatchingTag to Packet::FindFirstMatchingByteTag</li> |
|
259 |
<li>Packet::RemoveAllTags to Packet::RemoveAllByteTags</li> |
|
260 |
<li>Packet::PrintTags to Packet::PrintByteTags</li> |
|
261 |
<li>Packet::GetTagIterator to Packet::GetByteTagIterator</li> |
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262 |
</ul> |
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263 |
</li> |
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264 |
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<li><b>YansWifiPhyHelper::EnablePcap* methods not static any more</b> |
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<p>To accommodate the possibility of configuring the PCAP format used for wifi promiscuous mode traces, several methods of YansWifiPhyHelper had to be made non-static: |
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<pre> |
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- static void EnablePcap (std::string filename, uint32_t nodeid, uint32_t deviceid); |
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+ void EnablePcap (std::string filename, uint32_t nodeid, uint32_t deviceid); |
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- static void EnablePcap (std::string filename, Ptr<NetDevice> nd); |
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+ void EnablePcap (std::string filename, Ptr<NetDevice> nd); |
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- static void EnablePcap (std::string filename, std::string ndName); |
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+ void EnablePcap (std::string filename, std::string ndName); |
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- static void EnablePcap (std::string filename, NetDeviceContainer d); |
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+ void EnablePcap (std::string filename, NetDeviceContainer d); |
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- static void EnablePcap (std::string filename, NodeContainer n); |
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+ void EnablePcap (std::string filename, NodeContainer n); |
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- static void EnablePcapAll (std::string filename); |
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+ void EnablePcapAll (std::string filename); |
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</pre> |
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281 |
</p> |
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</li> |
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283 |
|
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<li><b>Wifi Promisc Sniff interface modified </b> |
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<p> |
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To accommodate support for the radiotap and prism headers in PCAP traces, the interface for promiscuos mode sniff in the wifi device was changed. The new implementation was heavily inspired by the way the madwifi driver handles monitor mode. A distinction between TX and RX events is introduced, to account for the fact that different information is to be put in the radiotap/prism header (e.g., RSSI and noise make sense only for RX packets). The following are the relevant modifications to the WifiPhy class: |
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<pre> |
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- void NotifyPromiscSniff (Ptr<const Packet> packet); |
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+ void NotifyPromiscSniffRx (Ptr<const Packet> packet, uint16_t channelFreqMhz, uint32_t rate, bool isShortPreamble, double signalDbm, double noiseDbm); |
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+ void NotifyPromiscSniffTx (Ptr<const Packet> packet, uint16_t channelFreqMhz, uint32_t rate, bool isShortPreamble); |
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- TracedCallback<Ptr<const Packet> > m_phyPromiscSnifferTrace; |
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+ TracedCallback<Ptr<const Packet>, uint16_t, uint32_t, bool, double, double> m_phyPromiscSniffRxTrace; |
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+ TracedCallback<Ptr<const Packet>, uint16_t, uint32_t, bool> m_phyPromiscSniffTxTrace; |
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</pre> |
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The above mentioned callbacks are expected to be used to call the following method to write Wifi PCAP traces in promiscuous mode: |
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<pre> |
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+ void WriteWifiMonitorPacket(Ptr<const Packet> packet, uint16_t channelFreqMhz, uint32_t rate, bool isShortPreamble, bool isTx, double signalDbm, double noiseDbm); |
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</pre> |
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In the above method, the isTx parameter is to be used to differentiate between TX and RX packets. For an example of how to implement these callbacks, see the implementation of PcapSniffTxEvent and PcapSniffRxEvent in src/helper/yans-wifi-helper.cc |
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</p> |
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</li> |
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<li><b> Routing decoupled from class Ipv4</b> |
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<p> All calls of the form "Ipv4::AddHostRouteTo ()" etc. (i.e. to |
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add static routes, both unicast and multicast) have been moved to a new |
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class Ipv4StaticRouting. In addition, class Ipv4 now holds only |
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one possible routing protocol; the previous way to add routing protocols |
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(by ordered list of priority) has been moved to a new class Ipv4ListRouting. |
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Class Ipv4 has a new minimal routing API (just to set and get the routing |
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protocol): |
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<pre> |
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- virtual void AddRoutingProtocol (Ptr<Ipv4RoutingProtocol> routingProtocol, int16_t priority) = 0; |
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+ virtual void SetRoutingProtocol (Ptr<Ipv4RoutingProtocol> routingProtocol) = 0; |
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+ virtual Ptr<Ipv4RoutingProtocol> GetRoutingProtocol (void) const = 0; |
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</pre> |
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</li> |
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317 |
|
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<li><b> class Ipv4RoutingProtocol is refactored</b> |
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<p> The abstract base class Ipv4RoutingProtocol has been refactored to |
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align with corresponding Linux Ipv4 routing architecture, and has been |
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moved from ipv4.h to a new file ipv4-routing-protocol.h. The new |
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methods (RouteOutput () and RouteInput ()) are aligned with Linux |
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ip_route_output() and ip_route_input(). However, |
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the general nature of these calls (synchronous routing lookup for |
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locally originated packets, and an asynchronous, callback-based lookup |
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for forwarded packets) is still the same. |
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<pre> |
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- typedef Callback<void, bool, const Ipv4Route&, Ptr<Packet>, const Ipv4Header&> RouteReplyCallback; |
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+ typedef Callback<void, Ptr<Ipv4Route>, Ptr<const Packet>, const Ipv4Header &> UnicastForwardCallback; |
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+ typedef Callback<void, Ptr<Ipv4MulticastRoute>, Ptr<const Packet>, const Ipv4Header &> MulticastForwardCallback; |
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+ typedef Callback<void, Ptr<const Packet>, const Ipv4Header &, uint32_t > LocalDeliverCallback; |
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+ typedef Callback<void, Ptr<const Packet>, const Ipv4Header &> ErrorCallback; |
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- virtual bool RequestInterface (Ipv4Address destination, uint32_t& interface) = 0; |
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+ virtual Ptr<Ipv4Route> RouteOutput (Ptr<Packet> p, const Ipv4Header &header, uint32_t oif, Socket::SocketErrno &errno) = 0; |
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- virtual bool RequestRoute (uint32_t interface, |
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- const Ipv4Header &ipHeader, |
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- Ptr<Packet> packet, |
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- RouteReplyCallback routeReply) = 0; |
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+ virtual bool RouteInput (Ptr<const Packet> p, const Ipv4Header &header, Ptr<const NetDevice> idev, |
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+ UnicastForwardCallback ucb, MulticastForwardCallback mcb, |
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+ LocalDeliverCallback lcb, ErrorCallback ecb) = 0; |
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</pre> |
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|
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</li> |
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<li><b> previous class Ipv4Route, Ipv4MulticastRoute renamed; new classes with |
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those same names added</b> |
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<p> The previous class Ipv4Route and Ipv4MulticastRoute are used by |
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Ipv4StaticRouting and Ipv4GlobalRouting to record internal routing table |
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entries, so they were renamed to class Ipv4RoutingTableEntry and |
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Ipv4MulticastRoutingTableEntry, respectively. In their place, new |
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class Ipv4Route and class Ipv4MulticastRoute have been added. These |
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are reference-counted objects that are analogous to Linux struct |
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rtable and struct mfc_cache, respectively, to achieve better compatibility |
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with Linux routing architecture in the future. |
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355 |
|
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<li><b> class Ipv4 address-to-interface mapping functions changed</b> |
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<p> There was some general cleanup of functions that involve mappings |
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from Ipv4Address to either NetDevice or Ipv4 interface index. |
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359 |
<pre> |
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- virtual uint32_t FindInterfaceForAddr (Ipv4Address addr) const = 0; |
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- virtual uint32_t FindInterfaceForAddr (Ipv4Address addr, Ipv4Mask mask) const = 0; |
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+ virtual int32_t GetInterfaceForAddress (Ipv4Address address) const = 0; |
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+ virtual int32_t GetInterfaceForPrefix (Ipv4Address address, Ipv4Mask mask) const = 0; |
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- virtual int32_t FindInterfaceForDevice(Ptr<NetDevice> nd) const = 0; |
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+ virtual int32_t GetInterfaceForDevice (Ptr<const NetDevice> device) const = 0; |
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- virtual Ipv4Address GetSourceAddress (Ipv4Address destination) const = 0; |
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- virtual bool GetInterfaceForDestination (Ipv4Address dest, |
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- virtual uint32_t GetInterfaceByAddress (Ipv4Address addr, Ipv4Mask mask = Ipv4Mask("255.255.255.255"));
|
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369 |
</pre> |
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370 |
|
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<li><b> class Ipv4 multicast join API deleted</b> |
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<p> The following methods are not really used in present form since IGMP |
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is not being generated, so they have been removed (planned to be replaced |
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by multicast socket-based calls in the future): |
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375 |
|
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376 |
<pre> |
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- virtual void JoinMulticastGroup (Ipv4Address origin, Ipv4Address group) = 0; |
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- virtual void LeaveMulticastGroup (Ipv4Address origin, Ipv4Address group) = 0; |
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379 |
</pre> |
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380 |
|
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381 |
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<li><b>Deconflict NetDevice::ifIndex and Ipv4::ifIndex (bug 85).</b> |
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<p>All function parameters named "ifIndex" that refer |
| 4385 | 384 |
to an Ipv4 interface are instead named "interface". |
385 |
<pre> |
|
386 |
- static const uint32_t Ipv4RoutingProtocol::IF_INDEX_ANY = 0xffffffff; |
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+ static const uint32_t Ipv4RoutingProtocol::INTERFACE_ANY = 0xffffffff; |
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||
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- bool Ipv4RoutingProtocol::RequestIfIndex (Ipv4Address destination, uint32_t& ifIndex); |
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+ bool Ipv4RoutingProtocol::RequestInterface (Ipv4Address destination, uint32_t& interface); |
| 4385 | 391 |
(N.B. this particular function is planned to be renamed to RouteOutput() in the |
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proposed IPv4 routing refactoring) |
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||
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- uint32_t Ipv4::GetIfIndexByAddress (Ipv4Address addr, Ipv4Mask mask); |
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+ int_32t Ipv4::GetInterfaceForAddress (Ipv4Address address, Ipv4Mask mask) const; |
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||
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- bool Ipv4::GetIfIndexForDestination (Ipv4Address dest, uint32_t &ifIndex) const; |
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+ bool Ipv4::GetInterfaceForDestination (Ipv4Address dest, uint32_t &interface) const; |
| 4385 | 399 |
(N.B. this function is not needed in the proposed Ipv4 routing refactoring) |
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</pre> |
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<li><b>Allow multiple IPv4 addresses to be assigned to an interface (bug 188)</b> |
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This is a new class to resemble Linux's struct in_ifaddr. It holds IP addressing information, including mask, |
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broadcast address, scope, whether primary or secondary, etc. |
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+ virtual uint32_t AddAddress (uint32_t interface, Ipv4InterfaceAddress address) = 0; |
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+ virtual Ipv4InterfaceAddress GetAddress (uint32_t interface, uint32_t addressIndex) const = 0; |
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+ virtual uint32_t GetNAddresses (uint32_t interface) const = 0; |
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<li>Regarding legacy API usage, typically where you once did the following, |
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<pre> |
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ipv4A->SetAddress (ifIndexA, Ipv4Address ("172.16.1.1"));
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ipv4A->SetNetworkMask (ifIndexA, Ipv4Mask ("255.255.255.255"));
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you now do: |
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Ipv4InterfaceAddress ipv4IfAddrA = Ipv4InterfaceAddress (Ipv4Address ("172.16.1.1"), Ipv4Mask ("255.255.255.255"));
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ipv4A->AddAddress (ifIndexA, ipv4IfAddrA); |
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container. We preserve the legacy GetAddress (uint32_t i) but it |
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is documented that this will return only the first (address index 0) |
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Ipv4Address Ipv4InterfaceContainer::GetAddress (uint32_t i) |
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</ul> |
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<li><b>New WifiMacHelper objects</b> |
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<p>The type of wifi MAC is now set by two new specific helpers, NqosWifiMacHelper for non QoS MACs and QosWifiMacHelper for Qos MACs. They are passed as argument to WifiHelper::Install methods.</li> |
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<pre> |
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- void WifiHelper::SetMac (std::string type, std::string n0 = "", const AttributeValue &v0 = EmptyAttributeValue (),...) |
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- NetDeviceContainer WifiHelper::Install (const WifiPhyHelper &phyHelper, NodeContainer c) const |
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+ NetDeviceContainer WifiHelper::Install (const WifiPhyHelper &phyHelper, const WifiMacHelper &macHelper, NodeContainer c) const |
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+ NetDeviceContainer WifiHelper::Install (const WifiPhyHelper &phy, const WifiMacHelper &mac, Ptr<Node> node) const |
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- NetDeviceContainer WifiHelper::Install (const WifiPhyHelper &phy, std::string nodeName) const |
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</p> |
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<li><b>Remove Mac48Address::IsMulticast</b> |
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<p>This method was considered buggy and unsafe to call. Its replacement is Mac48Address::IsGroup. |
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</li> |
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</ul> |
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<h2>Changed behavior:</h2> |
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<h2>Changes to build system:</h2> |
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<ul> |
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<h2>New API:</h2> |
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511 |
like functionality and are plumbed up into the helper classes. The |
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512 |
user-visible changes are the trace source name changes and the ability |
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513 |
to do promiscuous-mode pcap tracing via helpers. For further information |
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514 |
regarding these changes, please see the ns-3 manual</li> |
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515 |
|
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516 |
<li>StaticMobilityModel has been renamed ConstantPositionMobilityModel |
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517 |
StaticSpeedMobilityModel has been renamed ConstantVelocityMobilityModel</li> |
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518 |
|
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519 |
<li>The Callback templates have been extended to support more parameters. |
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520 |
See src/core/callback.h</li> |
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521 |
|
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522 |
<li>Many helper API have been changed to allow passing Object-based parameters |
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523 |
as string names to ease working with the object name service.</li> |
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524 |
|
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525 |
<li>The Config APIs now accept path segments that are names defined by the |
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526 |
object name service.</li> |
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527 |
|
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<li>Minor changes were made to make the system build under the Intel C++ compiler.</li> |
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529 |
|
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<li>Trace hooks for association and deassociation to/from an access point were |
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531 |
added to src/devices/wifi/nqsta-wifi-mac.cc</li> |
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</ul> |
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533 |
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<h2>Changed behavior:</h2> |
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536 |
<ul> |
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537 |
<li>The tracing system rework has introduced some significant changes in the |
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538 |
behavior of some trace sources, specifically in the positioning of trace sources |
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539 |
in the device code. For example, there were cases where the packet transmit |
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trace source was hit before the packet was enqueued on the device transmit quueue. |
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This now happens just before the packet is transmitted over the channel medium. |
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542 |
The scope of the changes is too large to be included here. If you have concerns |
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543 |
regarding trace semantics, please consult the net device documentation for details. |
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544 |
As is usual, the ultimate source for documentation is the net device source code.</li> |
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545 |
</ul> |
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546 |
|
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547 |
<hr> |
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<h1>Changes from ns-3.2 to ns-3.3</h1> |
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549 |
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<h2>New API:</h2> |
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551 |
<ul> |
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552 |
<li> |
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553 |
ns-3 ABORT macros in src/core/abort.h |
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554 |
Config::MatchContainer |
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ConstCast and DynamicCast helper functions for Ptr casting |
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556 |
StarTopology added to several topology helpers |
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NetDevice::IsBridge () |
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558 |
</li> |
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559 |
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560 |
<li>17-11-2008; changeset |
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561 |
<a href="http://code.nsnam.org/ns-3-dev/rev/4c1c3f6bcd03">4c1c3f6bcd03</a></li> |
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562 |
<ul> |
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<li> |
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564 |
The PppHeader previously defined in the point-to-point-net-device code has been |
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565 |
made public. |
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566 |
</li> |
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567 |
</ul> |
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568 |
|
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569 |
<li>17-11-2008; changeset |
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570 |
<a href="http://code.nsnam.org/ns-3-dev/rev/16c2970a0344">16c2970a0344</a></li> |
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571 |
<ul> |
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572 |
<li> |
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|
573 |
An emulated net device has been added as enabling technology for ns-3 emulation |
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|
574 |
scenarios. See src/devices/emu and examples/emu-udp-echo.cc for details. |
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575 |
</li> |
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576 |
</ul> |
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577 |
|
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<li>17-11-2008; changeset |
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579 |
<a href="http://code.nsnam.org/ns-3-dev/rev/4222173d1e6d">4222173d1e6d</a></li> |
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<ul> |
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<li> |
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582 |
Added method InternetStackHelper::EnableAsciiChange to allow allow a user to |
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hook ascii trace to the drop trace events in Ipv4L3Protocol and ArpL3Protocol. |
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</li> |
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</ul> |
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586 |
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587 |
</ul> |
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<h2>Changes to existing API:</h2> |
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<ul> |
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590 |
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591 |
<li> NetDevice::MakeMulticastAddress() was renamed to NetDevice::GetMulticast() |
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592 |
and the original GetMulticast() removed </li> |
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|
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594 |
<li> Socket API changes: |
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595 |
<ul> |
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596 |
<li> return type of SetDataSentCallback () changed from bool to void </li> |
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597 |
<li> Socket::Listen() no longer takes a queueLimit argument</li> |
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598 |
</ul> |
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599 |
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600 |
<li> As part of the Wifi Phy rework, there have been several API changes |
|
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601 |
at the low level and helper API level. </li> |
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<ul> |
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603 |
<li> At the helper API level, the WifiHelper was split to three classes: |
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604 |
a WifiHelper, a YansWifiChannel helper, and a YansWifiPhy helper. Some |
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605 |
functions like Ascii and Pcap tracing functions were moved from class |
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606 |
WifiHelper to class YansWifiPhyHelper. |
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|
607 |
<li> At the low-level API, there have been a number of changes to |
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|
608 |
make the Phy more modular:</li> |
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609 |
<ul> |
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<li> composite-propagation-loss-model.h is removed</li> |
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611 |
<li> DcfManager::NotifyCcaBusyStartNow() has changed name</li> |
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<li> fragmentation related functions (e.g. DcaTxop::GetNFragments()) have |
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changed API to account for some implementation changes</li> |
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614 |
<li> Interference helper and error rate model added </li> |
|
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615 |
<li> JakesPropagationLossModel::GetLoss() moved to PropagationLoss() class</li> |
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616 |
<li> base class WifiChannel made abstract </li> |
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617 |
<li> WifiNetDevice::SetChannel() removed </li> |
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618 |
<li> a WifiPhyState helper class added </li> |
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619 |
<li> addition of the YansWifiChannel and YansWifiPhy classes </li> |
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620 |
</ul> |
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621 |
</ul> |
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622 |
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<a href="http://code.nsnam.org/ns-3-dev/rev/dacfd1f07538">dacfd1f07538</a></li> |
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consistency between devices. |
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</li> |
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</ul> |
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<ul> |
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637 |
<a href="http://code.nsnam.org/ns-3-dev/rev/ed0dfce40459">ed0dfce40459</a></li> |
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640 |
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assignment of /32 addresses. |
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</li> |
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</ul> |
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</li> |
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</ul> |
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</ul> |
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<h2>New API:</h2> |
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<li>26-08-2008; changeset |
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<a href="http://code.nsnam.org/ns-3-dev/rev/5aa65b1ea001">5aa65b1ea001</a></li> |
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<ul> |
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<li> |
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net devices running in threads other than the main simulation thread to schedule |
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events. Allows for pacing the simulation clock at 1x real-time. |
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</li> |
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</ul> |
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<li>26-08-2008; changeset |
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<a href="http://code.nsnam.org/ns-3-dev/rev/c69779f5e51e">c69779f5e51e</a></li> |
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<ul> |
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Add threading and synchronization primitives. Enabling technology for |
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multithreaded simulator implementation. |
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</li> |
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</ul> |
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<h2>New API in existing classes:</h2> |
| 3686 | 682 |
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| 3505 | 683 |
|
684 |
<li>01-08-2008; changeset |
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<a href="http://code.nsnam.org/ns-3-dev/rev/a18520551cdf">a18520551cdf</a></li> |
|
686 |
<ul> |
|
687 |
<li>class ArpCache has two new attributes: MaxRetries |
|
688 |
and a Drop trace. It also has some new public methods but these are |
|
689 |
mostly for internal use. |
|
690 |
</ul> |
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</li> |
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<li>05-09-2008; changeset |
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<ul> |
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Change naming of MTU and packet size attributes in CSMA and Point-to-Point devices<br> |
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After much discussion it was decided that the preferred way to think about |
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the different senses of transmission units and encapsulations was to call the |
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MAC MTU simply MTU and to use the overall packet size as the PHY-level attribute |
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of interest. See the Doxygen of CsmaNetDevice::SetFrameSize and |
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PointToPointNetDevice::SetFrameSize for a detailed description. |
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</li> |
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</ul> |
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<li>25-08-2008; changeset |
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bug 273: constify packet pointers.<br> |
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have been changed from: |
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<pre> |
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Callback<bool,Ptr<NetDevice>,Ptr<Packet>,uint16_t,const Address &> |
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const Address &, const Address &, enum PacketType > |
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</pre> |
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to: |
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Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
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|
727 |
</pre> |
|
fbf628eb3ca6
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Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
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|
728 |
to avoid the kind of bugs reported in |
|
fbf628eb3ca6
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Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
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changeset
|
729 |
<a href="http://www.nsnam.org/bugzilla/show_bug.cgi?id=273">bug 273</a>. |
|
fbf628eb3ca6
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Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
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diff
changeset
|
730 |
Users who implement a subclass of the NetDevice base class need to change the signature |
|
fbf628eb3ca6
document API change
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
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|
731 |
of their SetReceiveCallback and SetPromiscReceiveCallback methods. |
|
fbf628eb3ca6
document API change
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|
732 |
</li> |
|
fbf628eb3ca6
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|
733 |
</ul> |
|
fbf628eb3ca6
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Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
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|
734 |
|
|
fbf628eb3ca6
document API change
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
parents:
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|
735 |
|
|
3508
7a3c6148c22d
actually use CHANGES.html
Craig Dowell <craigdo@ee.washington.edu>
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|
736 |
<li>04-08-2008; changeset |
|
7a3c6148c22d
actually use CHANGES.html
Craig Dowell <craigdo@ee.washington.edu>
parents:
3505
diff
changeset
|
737 |
<a href="http://code.nsnam.org/ns-3-dev/rev/cba7b2b80fe8">cba7b2b80fe8</a></li> |
|
7a3c6148c22d
actually use CHANGES.html
Craig Dowell <craigdo@ee.washington.edu>
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|
738 |
<ul> |
|
7a3c6148c22d
actually use CHANGES.html
Craig Dowell <craigdo@ee.washington.edu>
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|
739 |
<li> |
|
3551
fbf628eb3ca6
document API change
Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
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|
740 |
Cleanup of MTU confusion and initialization in CsmaNetDevice<br> |
|
3508
7a3c6148c22d
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Craig Dowell <craigdo@ee.washington.edu>
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changeset
|
741 |
The MTU of the CsmaNetDevice defaulted to 65535. This did not correspond with |
|
7a3c6148c22d
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|
742 |
the expected MTU found in Ethernet-like devices. Also there was not clear |
|
7a3c6148c22d
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Craig Dowell <craigdo@ee.washington.edu>
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changeset
|
743 |
documentation regarding which MTU was being set. There are two MTU here, one |
|
7a3c6148c22d
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Craig Dowell <craigdo@ee.washington.edu>
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|
744 |
at the MAC level and one at the PHY level. We split out the MTU setting to make |
|
7a3c6148c22d
actually use CHANGES.html
Craig Dowell <craigdo@ee.washington.edu>
parents:
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diff
changeset
|
745 |
this more clear and set the default PHY level MTU to 1500 to be more like |
|
7a3c6148c22d
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Craig Dowell <craigdo@ee.washington.edu>
parents:
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changeset
|
746 |
Ethernet. The encapsulation mode defaults to LLC/SNAP which then puts the |
|
7a3c6148c22d
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Craig Dowell <craigdo@ee.washington.edu>
parents:
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diff
changeset
|
747 |
MAC level MTU at 1492 by default. We allow users to now set the encapsulation |
|
7a3c6148c22d
actually use CHANGES.html
Craig Dowell <craigdo@ee.washington.edu>
parents:
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changeset
|
748 |
mode, MAC MTU and PHY MTU while keeping the three values consistent. See the |
|
7a3c6148c22d
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Craig Dowell <craigdo@ee.washington.edu>
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|
749 |
Doxygen of CsmaNetDevice::SetMaxPayloadLength for a detailed description of the |
|
7a3c6148c22d
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Craig Dowell <craigdo@ee.washington.edu>
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|
750 |
issues and solution. |
|
7a3c6148c22d
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Craig Dowell <craigdo@ee.washington.edu>
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changeset
|
751 |
</li> |
|
7a3c6148c22d
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Craig Dowell <craigdo@ee.washington.edu>
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|
752 |
</ul> |
|
3551
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|
753 |
|
| 3505 | 754 |
<li>21-07-2008; changeset |
755 |
<a href=" |
|
756 |
http://code.nsnam.org/ns-3-dev/rev/99698bc858e8">99698bc858e8</a></li> |
|
757 |
<ul> |
|
758 |
<li> class NetDevice has added a pure virtual method that |
|
759 |
must be implemented by all subclasses: |
|
760 |
<pre> |
|
761 |
virtual void SetPromiscReceiveCallback (PromiscReceiveCallback cb) = 0; |
|
762 |
</pre> |
|
763 |
All NetDevices must support this method, and must call this callback |
|
764 |
when processing packets in the receive direction (the appropriate place |
|
765 |
to call this is device-dependent). An approach to stub this out |
|
766 |
temporarily, if you do not care about immediately enabling this |
|
767 |
functionality, would be to add this to your device: |
|
768 |
<pre> |
|
769 |
void |
|
770 |
ExampleNetDevice::SetPromiscReceiveCallback |
|
771 |
(NetDevice::PromiscReceiveCallback cb) |
|
772 |
{
|
|
773 |
NS_ASSERT_MSG (false, "No implementation yet for |
|
774 |
SetPromiscReceiveCallback"); |
|
775 |
} |
|
776 |
</pre> |
|
777 |
To implement this properly, consult the CsmaNetDevice for examples of |
|
778 |
when the m_promiscRxCallback is called. |
|
779 |
</li> |
|
780 |
</ul> |
|
781 |
||
782 |
<li>03-07-2008; changeset |
|
783 |
<a href="http://code.nsnam.org/ns-3-dev/rev/d5f8e5fae1c6">d5f8e5fae1c6</a></li> |
|
784 |
<ul> |
|
785 |
<li> |
|
786 |
Miscellaneous cleanup of Udp Helper API, to fix bug 234 |
|
787 |
<pre> |
|
788 |
class UdpEchoServerHelper |
|
789 |
{
|
|
790 |
public: |
|
791 |
- UdpEchoServerHelper (); |
|
792 |
- void SetPort (uint16_t port); |
|
793 |
+ UdpEchoServerHelper (uint16_t port); |
|
794 |
+ |
|
|
4639
34e6d141c227
escape html special characters
Andrey Hippo<ahippo@yandex.ru>
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|
795 |
+ void SetAttribute (std::string name, const AttributeValue &value); |
| 3505 | 796 |
ApplicationContainer Install (NodeContainer c); |
797 |
||
798 |
class UdpEchoClientHelper |
|
799 |
{
|
|
800 |
public: |
|
801 |
- UdpEchoClientHelper (); |
|
802 |
+ UdpEchoClientHelper (Ipv4Address ip, uint16_t port); |
|
803 |
- void SetRemote (Ipv4Address ip, uint16_t port); |
|
|
4639
34e6d141c227
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|
804 |
- void SetAppAttribute (std::string name, const AttributeValue &value); |
|
34e6d141c227
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|
805 |
+ void SetAttribute (std::string name, const AttributeValue &value); |
| 3505 | 806 |
ApplicationContainer Install (NodeContainer c); |
807 |
</pre> |
|
808 |
</li> |
|
809 |
</ul> |
|
|
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|
810 |
|
| 3505 | 811 |
<li>03-07-2008; changeset |
812 |
<a href=" |
|
813 |
http://code.nsnam.org/ns-3-dev/rev/3cdd9d60f7c7">3cdd9d60f7c7</a></li> |
|
814 |
<ul> |
|
815 |
<li> |
|
816 |
Rename all instances method names using "Set..Parameter" to "Set..Attribute" |
|
817 |
(bug 232) |
|
818 |
</li> |
|
819 |
<li> How to fix your code: Any use of helper API that was using a method |
|
820 |
"Set...Parameter()" should be changed to read "Set...Attribute()". e.g. |
|
821 |
<pre> |
|
822 |
- csma.SetChannelParameter ("DataRate", DataRateValue (5000000));
|
|
823 |
- csma.SetChannelParameter ("Delay", TimeValue (MilliSeconds (2)));
|
|
824 |
+ csma.SetChannelAttribute ("DataRate", DataRateValue (5000000));
|
|
825 |
+ csma.SetChannelAttribute ("Delay", TimeValue (MilliSeconds (2)));
|
|
826 |
</pre> |
|
827 |
</li> |
|
828 |
</ul> |
|
829 |
</li> |
|
| 3686 | 830 |
|
| 3505 | 831 |
</ul> |
|
4305
9ec113d84cc8
prettify CHANGES and add behavior changed section for ns-3.4
Craig Dowell <craigdo@ee.washington.edu>
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|
832 |
<h2>Changed behavior:</h2> |
| 3505 | 833 |
<ul> |
|
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|
834 |
|
|
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|
835 |
<li>07-09-2008; changeset |
|
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|
836 |
<a href="http://code.nsnam.org/ns-3-dev/rev/5d836ab1523b">5d836ab1523b</a></li> |
|
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|
837 |
<ul> |
| 3686 | 838 |
|
|
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|
839 |
<li> |
|
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|
840 |
Implement a finite receive buffer for TCP<br> |
|
5a0182408867
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|
841 |
The native TCP model in TcpSocketImpl did not support a finite receive buffer. |
|
5a0182408867
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|
842 |
This changeset adds the following functionality in this regard: |
|
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|
843 |
<ul> |
|
5a0182408867
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|
844 |
<li> |
|
5a0182408867
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|
845 |
Being able to set the receiver buffer size through the attributes system. |
|
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|
846 |
</li> |
|
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|
847 |
<li> |
|
5a0182408867
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|
848 |
This receiver buffer size is now correctly exported in the TCP header as the |
|
5a0182408867
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|
849 |
advertised window. Prior to this changeset, the TCP header advertised window |
|
5a0182408867
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|
850 |
was set to the maximum size of 2^16 bytes. |
|
5a0182408867
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changeset
|
851 |
window |
|
5a0182408867
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changeset
|
852 |
</li> |
|
5a0182408867
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changeset
|
853 |
<li> |
|
5a0182408867
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changeset
|
854 |
The aforementioned window size is correctly used for flow control, i.e. the |
|
5a0182408867
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|
855 |
sending TCP will not send more data than available space in the receiver's |
|
5a0182408867
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|
856 |
buffer. |
|
5a0182408867
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changeset
|
857 |
</li> |
|
5a0182408867
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changeset
|
858 |
<li> |
|
5a0182408867
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|
859 |
In the case of a receiver window collapse, when a advertised zero-window |
|
5a0182408867
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|
860 |
packet is received, the sender enters the persist probing state in which |
|
5a0182408867
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|
861 |
it sends probe packets with one payload byte at exponentially backed-off |
|
5a0182408867
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|
862 |
intervals up to 60s. The reciever will continue to send advertised |
|
5a0182408867
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|
863 |
zero-window ACKs of the old data so long as the receiver buffer remains full. |
|
5a0182408867
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|
864 |
When the receiver window clears up due to an application read, the TCP |
|
5a0182408867
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|
865 |
will finally ACK the probe byte, and update its advertised window appropriately. |
|
5a0182408867
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changeset
|
866 |
</li> |
|
5a0182408867
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changeset
|
867 |
</ul> |
|
5a0182408867
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changeset
|
868 |
See |
|
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changeset
|
869 |
<a href="http://www.nsnam.org/bugzilla/show_bug.cgi?id=239"> bug 239 </a> for |
|
5a0182408867
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changeset
|
870 |
more. |
|
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changeset
|
871 |
</li> |
|
5a0182408867
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changeset
|
872 |
</ul> |
|
5a0182408867
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changeset
|
873 |
|
|
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|
874 |
<li>07-09-2008; changeset |
|
5a0182408867
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changeset
|
875 |
<a href="http://code.nsnam.org/ns-3-dev/rev/7afa66c2b291">7afa66c2b291</a></li> |
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changeset
|
876 |
<ul> |
|
5a0182408867
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changeset
|
877 |
<li> |
|
5a0182408867
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|
878 |
Add correct FIN exchange behavior during TCP closedown<br> |
|
5a0182408867
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changeset
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879 |
The behavior of the native TcpSocketImpl TCP model was such that the final |
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changeset
|
880 |
FIN exchange was not correct, i.e. calling Socket::Close didn't send a FIN |
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|
881 |
packet, and even if it had, the ACK never came back, and even if it had, the |
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|
882 |
ACK would have incorrect sequence number. All these various problems have been |
|
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883 |
addressed by this changeset. See |
|
5a0182408867
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|
884 |
<a href="http://www.nsnam.org/bugzilla/show_bug.cgi?id=242"> bug 242 </a> for |
|
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<li> 28-07-2008; changeset |
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interval from hello interval. This is an important bug fix as |
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instability in neighbor detection. |
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